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Vol. 29 No. 9 (2017): Vol 29 Issue 9

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Comparative Studies on Tributylammonium Chlorochromate Oxidation of Pentaammine Cobalt(III) Complexes of a-Hydroxy Acids Catalyzed by Benzalkonium Chloride

https://doi.org/10.14233/ajchem.2017.20650
R. Dayanandhan
Research and Development Center, Bharathiar University, Coimbatore-641 046, India; Department of Chemistry, Sri Vidya Mandir Arts & Science College,Uthangarai-636 902, India
K. Subramani
Department of Chemistry, Islamiah College, Vaniyambadi-635 752, India

Corresponding Author(s) : R. Dayanandhan

dayachemistry@gmail.com

Asian Journal of Chemistry, Vol. 29 No. 9 (2017): Vol 29 Issue 9

Abstract

A benzalkonium chloride (BKC) catalyzed oxidation of pentaammine cobalt(III) complexes of both bound and unbound a-hydroxy acids by tributylammonium chlorochromate (TriBACC) has been studied. Perchloric acid is adapted as a medium and the oxidative kinetics was contrived spectrophotometrically at room temperature. Rate of TriBACC oxidation is carried out at pseudo-first order conditions and rate constant was calculated. Absence of salt effect is observed on increasing NaClO4 concentration. Abatement in UV-visible absorbance at 503 nm for Co(III) complex confirms to nearly 100 % of initial absorbance. The complex [(NH3)5Co(III)-L]2+ shows inner sphere mechanism and induced electron transfer reaction yields 100 % Co(II). The product formed in this oxidation was analyzed and polymerization test was carried out. Comparative study of rate of TriBACC oxidation in presence of benzalkonium chloride is listed out.

Keywords

Cobalt(III) complexes Hydroxy acids Benzalkonium chloride Oxidation Tritutylammonium chlorochromate
Dayanandhan, R., & Subramani, K. (2017). Comparative Studies on Tributylammonium Chlorochromate Oxidation of Pentaammine Cobalt(III) Complexes of a-Hydroxy Acids Catalyzed by Benzalkonium Chloride. Asian Journal of Chemistry, 29(9), 1948–1952. https://doi.org/10.14233/ajchem.2017.20650
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